What is limp home mode on a Ford F-150?

The engine controller sets your engine to the "limp home mode", if an important part (e. g. an oxyen sensor) has recognized of working wrong. Instead of switching the engine completely of, the controller reduces it's power so that you can safely head home.

Well "limp home mode" is basically the same o any car operated with a computer. It is a special mode in witch the engine and sometimes the transmission is put into when a serious problem arises. The engine reduces power out put and rpms in order to saves the engine from receiving any more damage.

Most new vehicles do not have the traditional cable accelerator to throttle system. Instead, when you step on the accelerator, a signal is sent to a computer that regulates how much gas is sent to the engine. When any part of this system fails, the vehicle goes into "limp home" mode, only allowing the vehicle to go very slowly.

When the acceleration computer system of Ford F-150 goes fail
then limp home mode occurs in the car. Ford F-150 has throttle system , when user accelerate the car a signal is sent to a computer that regulates how much gas is sent to the engine. the failure of system is nothing but the limp home mode